Pivots

noun

1. A thing on which something turns; specifically a metal pointed pin or short shaft in machinery, such as the end of an axle or spindle.
2. (by extension) Something or someone having a paramount significance in a certain situation.
3. Act of turning on one foot.
4. The officer or soldier who simply turns in his place while the company or line moves around him in wheeling.
5. A player with responsibility for co-ordinating their team in a particular jam.